Welt grooving and beveling machine.



H. LYON.

WELT GROOVING AND BEVELING MACHINE. APPLICATION FILED MAY 17, 19131,0745%6. Patented Oct. 7, 1913.

3 SHEETSSHEBT l 2 /0l 25/ 22 H. LYON.

WELT GROOVING AND BEVELING MACHINE.

APPLICATION FILED MAY 17, 1918 1,074,726 Patented Oct. 7, 1913.

3 SHBETSSHEET 2.

ujitnesses H. LYON. WELT GEOOVING AND BEVELING MACHINE.

APPLICATION FILED MAY 17, 1913.

'1,074,726.- I Patented 0011 1913. y V r 70 3 SHEETS-S11E31 3.

wififlesses: lA-J l I l v gy.

tinrrnn erases rarnivrormcn.

HAIBBY LYON, F BROCKTON, MASSACHUSETTS, ASSIGNOR TOJOHN A. HARBOUR ANDPERLEY E. BARBOUR, OF BROCKTJN, MASSACHUSETTS, COPAR-TNERS DOING BUSI-NESS ASBBOCKTON BAND COMPANY, OF BROCKTON, MASSACHUSETTS.

WELT GRGOVING AND BEVELING MACHINE.

Specification of Letters Patent.

Patented Oct. '7, 191.3.

Application filed May 17, 1913. Serial No. 768,285.

I '0 all whom it may concern Be 1t known that I, HARRY Lyon, a citizenof the United States, of Brockton, in the county of Plymouth and Stateof Massa=v chusetts, have invented certain new and useful Improvements1n \Velt Groovlng and Beveling Machines, ofwhich the following is aspecification.

This invention relates to machines for grooving one side of a strip ofleather or other material suitable for welting for boots and shoes, andfor forming a beveled face on one of the edges of said strip, or forperforming either, of these operations, thetwo operations beingpreferably performed simultaneously. y

The invention is embodied in a machine havin a lower and an-upperstrip-feeding roll, t e lower roll being journaled in fixed bearings andbeing accompanied by a fixed beveling knife, adapted to act on one edgeof the strip, .while the upper roll is journaled in movable bearings,and is adapted to be moved'toward and from the lower roll and conform tothe thickness of the strip ,between the rolls, the upper roll beingaccompanied by a grooving-knife, which is also movable toward and fromthe lower roll and the beveling knife, so-that the machine adjustsitself automatically to the thickness of the welt strip and is adaptedto form a groove of uniform depth, regardless of the thickness of thestrip, and also to bevel the edge of a strip of any thickness.

The invention is also embodied in a machine characterized as abovestated, and pro vided with an adjustable gagefmthe inner edge of thewelt strip,said gage being adapted to be quickly adjusted to the widthof the strip, and to be automatically locked in its adjusted position.

The nature and objects of the invention are more fully set forth in thefollowing specification, and the novel features are pointed out in theclaims.

Of the accompanying drawings forming a part ofthisspecification,--Figure 1 represents a top plan view of a machiiiieembodying my invention, a part of the machine being shown in section.Fig. 2 represents a side elevation of the machine. Fig. 3 represents apartial section on'line 33 of Fig. 2, and an elevation of parts at theleft of said line. Fig. 4; represents a front elevation of the entiremachine. Fig. 5 represents an elevation of the side opposite that shownby Fig. 2. Fig. 6 represents a section on line 66 of Fig. 1. Fig. 7represents an enlarg ment of a portion of Fig. 1,, the upper feedingroll and other parts being removed.

Fig. 8 represents a section on line 88 of Fig. 7. Fig. 9 represents anenlargement of a portion of Fig. 2. Fig. 10 represents a section on linel010 of Fig. 1. Fig. 11 represents a section on line 11-11 of Fig. 9,and an elevation of the parts at the right of said line. Fig. 12represents a perspective view of the part hereinafter called the-faceplate. Fig. 13 represents a perspective view of the grooving-knifesupporting-arm. Fig. 14 represents a perspective view of thegrooving-knife. Fig. 15 represents a perspective view of the bevelingknife. Fig. 16

represents a perspective view of a welt strip partially grooved andbeveled.

The same reference characters indicate the same parts in all of thefigures.

12 represents the base of the machine frame to which are affixedstandards 13, having upper bearings '14, for the drivingshaft 15, andlower bearings 16 for the shaft- 17 which carries the lower welt-feedingroll 18, the upper ends of said standards being offset, as shown byFigs. 4 and 10, so that the shaft 15 is located at one side of and abovethe shaft 17. .The driving-shaft ha the usual fast and loose helt pullys 20 and 21, and a driving gear 22, located bet-ween the bearings 11.Au ii'iterm'e'diate gear 23, the shaft of which is journalcd in hearingsin the standards 13, connects the driving gear 22 with a gear 24 on thelower feed roll shaft 17.

represents theupper welt-feeding roll, the shaft 26 of which isjournaled in movable bearings 27 on a swinging yoke or frame 28 (Fig.1), adapted to swing on the driving-shaft 15, said yoke being preferablyprovided with tubular trunnions 2). forming bushings for the bearings141, and adapted to turn therein. A gear 30 attached to the upperfeeding-roll shaft 26, meshes with tie driving gear 22.

It will now be seen that the upper feeding roll is adapted to be raisedand lowered relatively to the lower feeding roll 18 andto a welt strip31 interposed between said rolls, the upper roll being thereby adapted ito conform to the thickness of the welt strip and to be raised toentirely clear the same as indicated by dotted lines in Fig. .10. Thedownward movement of the upper roll may be limited by a fixed stopmember 32 on the base and a movable stop member provided by a neck 33formed on'or attached to the bearings 27 and yoke 28, and extendingscrews 36, 37. Said face plate has a. down wardly projecting finger 38,adapted to bear.

on the outer end of the knife 43, above the U shaped portion of thecutting edge, and also to bear lightly on the upper surface of the weltstrip, said finger preventing the upper surface of the portion of thewelt in which the groove is formed from being raised or bent upwardly bythe knife. The

plate 35 is provided with a curved slot 39 which receives the screw 37and permits the plate to ,swing on the screw 36 to adjust-the finger38'. The groovingknife 43 has a shank 44 which is attached by a screw 45to an arm 46 ad-- justably secured to the face plate 35, said arm havinga slot 47 which receives the screw 45, and permits a vertical adjustmentof the knife 43. The arm 46 has a socket 48 which is-divided at one sideand is adapted to receive a stud 49, affixed to the plate 35. The arm 46is adapted to turn on said stud for the purpose of adjusting the knife43 to a bearing on the finger 38. 'The socket 48 is adapted to becontracted on said stud to secure the knife in its adjusted position,the arm] being provided for this purpose with cars 50 a justablyconnected by a screw 51..

Ascrcw 52 adjustable in a tapped ear'53 on the plate 35 bears on an ear54 on the arm 46, and is adapted to turn the arm on the stud 49 when thescrew 51 is loosened.

It will be seen from' the foregoing that the grooving-knife 43 isadjustably-mounted on the frame which carries the upperfeeding roll andis movable with said roll toward and from the lower feeding-roll and theinterposed welt strip.

55 represents a fixed strip-supporting bed supported by a fixed standard56 on the base, the upper surface of the bed being tangential to thelower feeding-roll 18, as

shown by Fi 3. The welt-beveling knife 57 (Fig. 15 is supported by thebed 55, said knifehaving aslotted shank 58,

which is attached by a scr ew 59 to a.- projection 61, (Fig. 4) on astrip guide or gage 60 which is secured to the bed 55 by a screw 62,passing through a slot 63, (Fig. 7 in said gage. The cutting edges ofthe grooving and beveling knives are arranged to form a groove in theupper surface,

' and a beveled face 66 on one edge of the welt strip, as indicated byFig. 16. The gage 60 bears on the outer edge of the welt strip, asindicated by Fig. 7. The beveling-knife is rendered adjustable by theslot 63 and screw 62, to compensate for wear of its cutting edge.

67 represents an inner gage or guide for the inner edge of the weltstrip, said gage being adjustable toward and from the fixed gage 60, andprovided with means whereby it may be quickly adjusted to the width ofthe strip, and automatically locked inits adjusted position. Theadjustable gage 67, which isbest shown by Figs. 7 and 3, is a plateformed to slide on the bed 55, and provided with a guiding face 67"against which "the inner edge of the welt strip bears. The

under sideof the gage plate 67 is provided with a projection 69, andthebed is provided with a slot 70 in which the projection is movable. Theslot and projection have parallel edges and the projection is narrowerthan the slot, so that its edges are movable out of parallelism with theedges of the slot, as shown by dotted lines in Fig. 7, two diagonallyopposite corners of the projection being therefore ada 'ited to be heldin binding or locking engagementwit-h the edges of the slot. A spring 71connected at one end with a hook on the projection 69 and-at the otherend with a hook on the standard 56, normally holds the projection 69 inlooking engagement with the sides of the slot. The gage plate 67 isprovided with a handle 72 by which the operator may turn it to loosenthe projection 69, and. permit free movement thereof lengthwise of theslot 7 O, for the purpose of laterally adjusting the gage face 67. Whena welt strip is applied to the machine, the upper feed rollrisesautomatically, it being raised by the welt strip. The operatorplaces the outer edge of the strip against the fixed gage 60, and at thesame time manipulates the handle 72, to release the projection 69, -sothat the gage plate 67 is free to adjust itself to the width of thestrip. When the stripis in place between the two gages, the operator releases the handle 72, and the gage plate 67 is automatically locked inits adjusted position.

The feeding-rolls 18 and 25 are rotated by the described mechanism inthe directions indicated-by the arrows in Fig. .3, and the knives '57and 43 are arranged to engage the strip at points close to or beside thenip of the feeding-rolls, so that the rolls do not exert apulling-strain on the portion of the strip which isengaged by theknives, but

instead, push said portion against the knives. Hence, there is noliability of stretching the strip and temporarily reducing its thicknessat the point where it is being'cut, when the strip is of soft andstretchy material. Thes'lsopth of the groove formed in the strip istherefore uniform. The upper feeding-roll and the grooving-knife beingmounted, as described, on a frame which is jonrnaledto swing on the axisof the driving gear 22, the torque of said gear exerts adownwardpressure on theeupper feedingroll and holds it against the weltstrip with a pressure which is not affected by the thickness of. thestrip. Said pressure is however affected by the resistance offered by vthe knives to the feed movement of the strip, so that when the knivesare dull and offer an increased resistance, the downward pressure" ofthe upper feeding-roll is increased in proportion to the-resistance. Thepositive feeding of the strip against relatively dull knives is thusinsured and the pressure maintained at all times at no more than thedegree necessary to cut and feed the strip. hen the knives encounterrelatively soft portions of the strip, the pressure is diminished, sothat the soft portions are not unduly compressed bv the feeding-rolls.

I claim:

' i '1. A welt-preparing machine comprising downward a lowerfeeding-roll supported by fixed bearings, a support movable toward andfrom the lower roll, an upper feed roll and a grooving-knife carried bysaid support, a

driving-shaft and driving connections between said shaft andfeeding-rolls causing the torque of the driving-shaft to exert apressure on the upper feedingroll. 4

2. A welt-preparing machine comprislng a lower feeding shaft journaledin fixed bearings and provided with a lower feeding roll, adriving-shaft provided with a dr1ving gear, an oscillatory supportjournaled on the driving-shaft, an upper feeding shaft journaled inbearings on said support and provided with an upper feeding-roll, agrooving-knife connected with said support,

and connections between the driving gear and the feeding shafts, wherebysaidshafts and rolls are driven, the upper feeding-roll being presseddownwardly by the torqueof I the driving gear.

3. A welt-preparing machine comprising a lower feeding shaft journaled1n fixed bearings and provided with a lower feedinggear on the upperfeed shaft meshing with, the driving gear and pressed downwardly by thetorque of the latter, a gear on the lower feed shaft, and anintermediate gear journaled in fixed bearings and connecting the gear onthe lower feed shaft with the driving gear. 7

i. A welt-preparing machine comprising a lower shaft supported by fixedbearings and provided with a lower feeding roll, a driving shaft havinga driving gear, a swinging frame journaled on the driving shaft,,m1dprovided with anfiarm atvits swinging end, an upper shaft journaled inhearings on said frame and provided with an upperv feeding roll, drivingconnections between the driving gear and feed shafts, and agrooving-knife adjustably mounted on said arm. I v

A welt-preparing machine comprising a lower shaft supported by fixedbearings and. provided with a, lower feeding-roll, a driving shafthaving a driving gear, a swinging frame journaled on the driving shaft,and .provided with an arm at its swinging end, an upper shaft journaledin hearings on said frame and provided with an upper feeding roll,driving connections between the driving gear and feed shafts, a fingerconnected with said arm and adapted to bear on a welt strip, and agrooving-knife adjustably mounted on the arm and adapted to bear ons'ald finger.

6. A welt-preparing machine'comprising V a lower shaft supported byfixed bearings and provided with a lower feeding-roll, a driving shafthaving a driving gear, a swinging frame j'ournaled on the driving shaft,and provided, with an arm at its swinging end, an upper shaft journaledin bearings on said frame and provided with an upper feeding roll,driving connections between the driving gear and feed shaft-s, a faceplate adjustably secured to said arm and provided with a downwardlyprojecting finger, an arm adjustably connected with said face plate anda. groovingknife at tached to said arm, and adapted to bear on thefinger. v I

7. A- welt-preparingmachine comprising lower and upper feeding-rolls,-fixed bearings for the lower roll, a movable support having bearings fortheupper roll, a fixed bed adjacent to the nip ofthe rolls, an outergage attached to'said-bed and adapted to guide the outer edge ofa weltstrip, a beveling knife adjustably secured to said gage,'and supportedthereby at a predetermined height relatively to the highest part of thelower roll, and an'in'ner gage adjustably mounted on the-bodiv 8.1%.welt-preparing machine comprising lower and upper feeding-rolls, fixedbearings for the lower roll, a movable support having bearings for theupper roll, a fixed 13o bed adjacent to the nip of the rolls, an outergage attached to; said bed and adapted to guide the outer edge of a Weltstrip, a beveling knife adjustably secured to said gage, and supportedthereby at a predetermined height relatively to the highest part of thelower roll, an inner gage adjustably mounted "on the bed, and agrooving-knife adj ustably secured to the said movablesupport.

9. A welt-preparing machine-comprising lower and upper feeding-rolls,fixed bearings for the lower roll, a movable support having bearings forthe upper roll, a fixed bed adjacent to the nip of the rolls, an outergage attached to said bed and adapted to guide the outer edge of a weltstrip, a beveling knife adjustably secured to said gage, an inner gagemovable on the bed, and adjustable toward and from the outer gage, andautomatic means for locking the inner gage in any position to which itmay be ad justed.

10. A welt-preparing machine comprising lower and upper feeding-rolls,fixed beariligs for the lower roll, a movable support having bearingsfor the upper roll, a fixed bed adjacent to the nipof the rolls, andprovided with a parallel-sided slot, an outer gage attached to said bedand adapted to guide the outer edge of'a welt strip, a beveling knifeadjustably secured to said gage,

an inner gage movable on the bed and pro-4 vided with a parallel-sidedprojection movable in said slot and adapted ,to engage the sidesthereof, and a spring adapted to hold the projection in bindingengagement. with the sides of the slot? In testimony whereof I haveafiixed my.

HARRY J. HIsTEN, KENNETH W. KEITH.

